package cn.tedu.csmall.passport.security;

import cn.tedu.csmall.passport.mapper.AdminMapper;
import cn.tedu.csmall.passport.pojo.vo.AdminLoginInfoVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import java.nio.file.attribute.UserPrincipalNotFoundException;
import java.util.ArrayList;
import java.util.List;

@Slf4j
@Service
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    AdminMapper adminMapper;

    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException{
        log.debug("Spring Security框架自动调用UserDetailsServiceImpl中的loadUserByUsername方法，参数：{}", s);

        AdminLoginInfoVo admin = adminMapper.getLoginInfoByUsername(s);
        log.debug("从数据库中根据用户名匹配的用户信息结果{}",admin);
        if (admin == null ){
            log.debug("没有与用户名【{}】匹配的用户信息,抛出异常", s);
            String message = "登录失败,用户名不存在";
            throw new BadCredentialsException(message);
        }

        //处理权限信息
        List<GrantedAuthority> authorities = new ArrayList<>();
        for (String permission : admin.getPermissions()) {
            GrantedAuthority authority = new SimpleGrantedAuthority(permission);
            authorities.add(authority);
        }


        AdminDetails adminDetails = new AdminDetails(
                admin.getId(),
                admin.getUsername(),
                admin.getPassword(),
                admin.getEnable()==1,
                authorities
        );

//        UserDetails userDetails = User.builder()
//                .username(admin.getUsername())
//                .password(admin.getPassword())
//                .disabled(admin.getEnable() == 0)
//                .accountLocked(false)
//                .accountExpired(false)
//                .credentialsExpired(false)
//                .authorities("暂时给出的假的权限标识")
//                .build();
        log.debug("即将向Spring Security框架返回AdminDetails对象：{}", adminDetails);
        return adminDetails;

    }
}
